Device for administering anesthetics.



N0. 7|2,643. Patented Nov. 4, I902.

- A. H. BISHOP.

DEVICE FOR ADMINIST ER'ING ANESTHETICS.

:Application filed Aug. 30, 1902.)

(N0 Modei.)

Elvwenkm m: Norms PETE! cu. Pnmou'rwou WASHINGTON. 0. c.

UNITED STATES PATENT OFFICE.

ALBERT H. BISHOP, OF FORT DODGE, IOWA.

-DEVICE FOR ADMINISTERING AN ESTHETICS.

SPECIFICATION formingpart of Letters Patent No. 712,643, dated. November 4, 1902.

Application filed August 30, 1902. Serial No. 121,686. (No model.)

To ctZZ whom it Hwy concern.-

Be it known that I, ALBERT H. BISHOP, a citizen of the United States, residing at Fort Dodge, in the county of Webster and State of Iowa, have invented certain new and useful Improvements in Devices for Administering Anesthetics; and I do hereby declare the following to be a full, clear, and exact descrip tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same;

This invention relates to certain new and useful improvements in devices for administering anesthetics, as ether; and the inven tion consists in the construction and combination of the parts constituting the same, as will be hereinafter set forth, and pointed out in the claims.

In the accompanying drawings, which form a part of this specification, Figure 1 is a side elevation of an instrument or device for administering ether or other anesthetic made in accord with my invention. Fig. 2 isa vertical section. holder, and Fig. 4: a perspective view of the covering-plate for the hood.

Referring to the drawings, which illustrate one embodiment of my invention, A desigperforations a a to admit the passing therethrough of pins or bolts which engage a band or ring B, which carries a pad of gauze or other light-wovenmaterial. The ring and pad are preferably of less diameter than the diameterof thehood opposite the point of attachment, and the gauze coveringior the ring may be secured thereto in any suitable manner, and upon the pad B"the anesthetic is dropped. The pad B] is of such construction and materialthat it will absorb the liq-.

uid anesthetic and permit air to pass through and about the pad, so that the volatile ele- Fig. 3 is a plan View of the pad ments of the anesthetic will be mixed with air before being inhaled by the patient.

The upper end of the hood A has removably attached thereto a plateor disk 0, consisting, preferably, of a metallic rim which carries a transparent disk C, and to the rim there are attached spring-arms c c, which are shaped to frictionally engage the inner sides of the hood and maintain the plate 0 in such position as it may be placed,and it is obvious that by the construction shown the plate may be adjnsted'to and fromthe upper edge of the hood to admit more or less air to and about the pad.

Ether or other similar anesthetic is placed in a container D, which is preferably made of metal or other material which is a good conductor of heat, such vessel having at its upper end a conical neck for the reception of a stopper, through which is passed a tube 61, the lower-end being positioned near the bottom and to one side of the container. The upper end of this tube at is connected by a coupling with side tubes D, which extend from the coupling outward and downward, the lower ends of the side tubes D being bent inward, so that they can pass through perforations or apertures, which are positioned opposite each other near the upper end of the hood. The ends of the side tubes extend inward to be positioned above the pad. The tubes D D may have run therethrough astrin g of absorbent material to partially fill thetubes to insurea dropping of the liquid from the ends of the tubes upon the pad rather than aconstant flow thereon. The tubes adjacent to their ends and on each side of the hood may be provided with washersjd.

The ether-container D is connected to the hood by means of hooks or bars E, which are .pivotally attached to the'hoodat one end and engage with staples or eyes attached near the gauze or absorbent material of which it is made up, the top may be adjusted to cut ofi or regulate the supply of air above the pad, the siphoning of the liquid anesthetic may be Watched through the transparent top, and the flow may be regulated by grasping or covering more or less of the container by the hand, as the heat thus applied will by reason of the volatile nature of the ether cause a pressure in the container above the liquid. To start the siphoning or dropping of the anesthetic upon the pad, it is only necessary for the operator to grasp the container with his hand, and in a short time the pressure within the container will start the flow. The shape of the hood and the construction of the parts may be varied from what is shown in the drawings. The container D may be swung to a horizontal position, and when so placed the end of the tube (1, owing to the bend therein, will be above the level of the liquid, and thus stop the fiow.

Having thus described myinvention, what. I claim as new, and desire to secure by Letters Patent, is

1. Inadevice foradministeringanesthetics, the combination of a hood, a pad removably supported within the same, a partially-transparent closure or top adjnstably attached to the upper end of the hood, a container for the anesthetic carried by the hood, supplytubes between the container and the hood the discharge end of the tubes being positioned above the pad, substantially as shown and for the purpose set forth.

2. In a device for administering anesthetics, the combination of a hood, a metal container maintained above the same, a pipe which enters the container, side tubes connected with the pipe the lower ends of the tube entering the hood, a pad supported by the hood and a cover or top *adj ustably attached to the open upper end of the hood, substantially as shown and for the purpose set forth.

3. In adevice for administeringanesthetics, the combination of a metal container for the anesthetic, two siphon-tubes connected to a pipe which enters the container,.a hood having apertures on opposite sides through which the siphon-tubes enter the hood, a pad maintained below the discharge ends of the siphontube and an adjustable top for the hood,.subst-antially as shown.

In testimony whereof I have hereunto subscribed my name in the presence of two witnesses.

ALBERT H. BISHOP. 

